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FOR IMMEDIATE RELEASE                             April 12, 2005

Release No. DDC-3

 

 

               WORK ON NIU SEWER BYPASS SET TO BEGIN

APRIL 25

 

Work is scheduled to begin on April 25, 2005, on installation of a temporary sewer force main along Kalanianaole Highway in Niu.

 

Once work begins, motorists should expect delays and lane closures during non-peak hours over the next several months.

 

Construction of the emergency bypass will allow the City to install a permanent replacement for the underground force main that ruptured three times in February because of corrosion. The bypass will run from the Niu Valley Wastewater pump station, just Ewa of Niu Valley Shopping Center, under Kalanianaole Highway to an existing sewer trunk at Puuikena Drive and Hawaii Loa Ridge. Sewage would be diverted from the pump station to the bypass line, allowing for replacement of the current main.  Construction of the permanent replacement is more time-consuming and expensive. Design and construction will take two to three years.

 

The bypass would cross the town-bound lanes of Kalanianaole Highway to the median, then run along the median. It would be above ground except for intersections.

 

 The Honolulu firm of James W. Glover, Ltd., has been contracted to install the bypass.  The Department of Design and Construction and the Department of Environmental Services are overseeing the project for the City.

 

Work on the emergency bypass will be done during non-peak hours, from 9 a.m. to 3 p.m. and 10 p.m. to 5 a.m. The contractor will try to confine lane closures to no more than one lane of Kalanianaole Highway in each direction. Those will generally be along the median.

 

The project is expected to take several months. The anticipated sequence of work is:

 

  • Phase 1.  Preparatory work including layout of new work and investigation for existing underground utilities.  Work is anticipated to take one week.

 

  • Phase 2.  Trench excavation and pipe installation work across and adjacent to Puuikena Drive.  Work is anticipated to take three weeks.

 

  • Phase 3.  Trench excavation and pipe installation work across Halemaumau Street.  Work is anticipated to take two weeks.

 

  • Phase 4.  Trench excavation and pipe installation work adjacent to Niuiki Circle.  Work is anticipated to take two weeks.

 

  • Phase 5.  Pipe fabrication and installation work along the medians from Niuiki Circle to Kawaikui Beach Park.  Work is anticipated to take six weeks.

 

  • Phase 6.  Pipe connection work to the existing sewerage system adjacent to Niuiki Circle and Kawaikui Beach Park.  Work is anticipated to take two weeks.

 

  • Phase 7.  Site Restoration and cleanup work.  Work is anticipated to take one week.

 

The anticipated sequence and duration of work may be altered due to final permit conditions and unforeseen site conditions.

 

 The temporary force main is intended to remain in service for two to three years until a permanent force main is designed and installed.

 

 

 

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Contact:

            Wayne Hashiro, director, Department of Design and Construction, 523-4564

            Eric Takamura, director, Department of Environmental Services, 692-5159

            Mark Matsunaga, 527-5767

 

 

 

Tuesday, April 12, 2005

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